Overmolded grasper jaw
First Claim
Patent Images
1. A surgical instrument, comprising:
- an elongate tube extending along an axis;
an actuation mechanism positioned at least partially within the elongate tube and axially movable with respect to the axis of the elongate tube;
a first jaw structure comprising;
a first jaw spine having a distal portion and a proximal portion, the first jaw spine comprising a first aperture extending through the proximal portion thereof, a first slot positioned distal the first aperture;
a first overmold having an atraumatic outer surface and a first coupler adapted to receive a jaw pad; and
a first atraumatic jaw pad coupled to the first coupler ; and
a second jaw structure comprising;
a second jaw spine having a distal portion and a proximal portion, the second jaw spine comprising a second aperture positioned through the proximal portion thereof, a second slot positioned distal the second aperture;
a second overmold having an atraumatic outer surface and a second coupler adapted to receive a jaw pad; and
a second atraumatic jaw pad coupled to the second coupler; and
wherein the second jaw spine is pivotally connected to the first jaw spine at a first common pin extending through the first aperture and the second aperture, the first common pin operably coupled to the actuation mechanism, andwherein the first jaw slot partially overlays the second jaw slot forming an intersection location therebetween, and wherein the second jaw spine is slidably connected to the first jaw spine at a second common pin extending through the first jaw slot and the second jaw slot at the intersection location, the second pin coupled to the elongate tube.
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Abstract
A surgical instrument comprising an elongate tube extending along an axis includes an actuation mechanism; a first jaw spine; and a second jaw spine the second jaw spine pivotally connected to the first jaw spine at a common pivot pin to open and close the jaw spines in response to movement of the actuation mechanism. The jaw spines can be formed of a metallic material and are overmolded with an atraumatic plastic material. By overmolding the plastic onto the metal spine, an atraumatic outer surface can be formed of the plastic material along with a high degree of detail.
109 Citations
18 Claims
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1. A surgical instrument, comprising:
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an elongate tube extending along an axis; an actuation mechanism positioned at least partially within the elongate tube and axially movable with respect to the axis of the elongate tube; a first jaw structure comprising; a first jaw spine having a distal portion and a proximal portion, the first jaw spine comprising a first aperture extending through the proximal portion thereof, a first slot positioned distal the first aperture; a first overmold having an atraumatic outer surface and a first coupler adapted to receive a jaw pad; and a first atraumatic jaw pad coupled to the first coupler ; and a second jaw structure comprising; a second jaw spine having a distal portion and a proximal portion, the second jaw spine comprising a second aperture positioned through the proximal portion thereof, a second slot positioned distal the second aperture; a second overmold having an atraumatic outer surface and a second coupler adapted to receive a jaw pad; and a second atraumatic jaw pad coupled to the second coupler; and wherein the second jaw spine is pivotally connected to the first jaw spine at a first common pin extending through the first aperture and the second aperture, the first common pin operably coupled to the actuation mechanism, and wherein the first jaw slot partially overlays the second jaw slot forming an intersection location therebetween, and wherein the second jaw spine is slidably connected to the first jaw spine at a second common pin extending through the first jaw slot and the second jaw slot at the intersection location, the second pin coupled to the elongate tube. - View Dependent Claims (2, 3, 4, 5)
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6. A surgical instrument, comprising:
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an elongate tube extending along an axis; an actuation rod extending at least partially within the tube, the actuation rod axially movable with respect to the elongate tube; a first composite structure comprising; a first jaw spine having a first cam slot, the first jaw spine being coupled to the outer tube by a pin extending into the first cam slot; and a first mold structure overlayed on at least a portion of the first jaw spine, the first mold structure being formed of a different material than a material of the first jaw spine, and the first mold structure comprising a first coupler adapted to receive a jaw pad; and a second composite structure comprising; a second jaw spine having a second cam slot, the second jaw spine being coupled to the outer tube by the pin extending into the second cam slot, the second jaw spine being pivotally connected to the first jaw spine at a location distal of the pin; and a second mold structure overlayed on at least a portion of the second jaw spine, the second mold structure being formed of a different material than a material of the first jaw spine, and the second mold structure comprising a second coupler adapted to receive a jaw pad. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A surgical instrument, comprising:
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an elongate tube extending along an axis; an actuation mechanism positioned at least partially within the elongate tube and axially movable with respect to the elongate tube about the axis; a jaw assembly coupled to the elongate tube comprising; a first jaw comprising; a first jaw spine; a first molded outer layer disposed on at least a portion of the first jaw spine; and a first disposable jaw pad removably coupled to the first molded outer layer; and a second jaw, the second jaw coupled to the first jaw at a pivotal connector and a sliding connector, the sliding connector positioned distal of the pivotal connector on the first and second jaws. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification